Fredeeick gbinnell



(No Model.)

1?. GRINNELL.

FIRE EXTINGUISHBR.

No. 269,200. Patented Dec. 19, 1882.

WITNESSESI INVENTORI UNITED STATES A ENT TTrca.

FREDERICK GRINNELL, OF PROVIDENCE, RHODE ISLAND.

FIRE-EXTINGUISHER.

SPECIFICATION formingpart of Letters Patent No. 269,200, dated December 19, 1882.

Application filed February 20, 1882. (No model.)

To all whom it may concern:

Be it known that I, FREDERICK GRINNELL, of the city and county of Providence, and State of Rhode Island, have invented a new and useful Improvement in Fire-Extinguishers; and I hereby declare that the following is a full, clear, and exact description of the same, reference being had to the accompanying drawings, forming part of this specification.

This invention has reference to an improvement in the method now adopted for connecting distributers to the water-mains put up in buildings for the purpose of extinguishing fires automatically or otherwise.

Rose-head and other distributers have heretofore been secured to the Water-supply pipes by means of T, elbow, or similar fittings. The

pipes had to be cutup into short lengths, threads out on each of the ends, and the special fitting screwed onto the ends. The distributer was then secured into the branch of the fitting. By this arrangement great waste is incurred, as a large amount of short pieces of pipe is lost. The cost of putting up such systems of piping is very great, first, on account of the waste in pipe; second, the cost of the large number of fittings; and, third, on account of the labor required to cut the pipes and provide them with scrcw-threads at their ends to be screwed into the fittings which receive the distributers. Not only is this old method costly, but the large number ofjoints which must be made and maintained watertight are liable to leak and cause damage by water.

The object of this invention is to facilitate the putting up of the pipes, save the loss of the short ends, the cost of the branch fittings, and reduce the labor in putting up the distributing-pipes.

The invention consists in the improved method of putting .up the pipes, and in preparing the pipe by flatteningportions at such distances apart as will be -required to receive the distribnters, make holes into the so flattened parts, and tapthem to receive the screwthreaded ends of the distributers, as will be more fully set forth hereinafter.

Figure 1 is a perspective view of a main water-supp] y pipe and lateral branch pipes provided at intervals with distributers. Fig. 2 is an enlarged view, showing a central and two tween each length.

| end pieces of a length of pipe, each provided with a distributor. Fig. 3 is a sectional view of the flattened portion of a pipe into which a distributer is screwed.

The distributcrs shown in the drawings are distributers covered with a cap secured with fusible solder, known as the Parmelee automatic fire-extinguisher.

In the drawings, A is the supply-main, and B the distributing-mains. C is a coupling by which two lengths of pipe are united, and D is the cap closing the end of the pipe. E E are the distributers. f is the flattened portion of the pipe, and g the screw-thread of the distributer.

I will now more fully describe the manner in which I carry out my present invention.

\Vhen the distrihuters are to be placed eight feet from center to center I take the usual lengths of aboutsixteen feet wroughtiron pipe and indent the surface in a press at regular intervals. I now drill and tap a hole to receive the screw-thread g of the distributer, and any number of such pipes may be coupled together to form branches from the main pipe without cutting the same. By the old plan a piece of pipe four feet in length had to be cut and threaded and screwed into the cross-fitting on each side of the main supply. A T-fitting has now to be secured to the ends of the four-feet pipes, and then successive lengths of eight-- feet pipe have to be used with T-fittings be- By this improved method a large saving in first cost is secured, and the system of pipes is also more elastic, more liable to yield to jars, the settling of the building, and to the sudden blow incident to the letting on of the water to the system, as the large number of cast-metal fittings heretofore used made the whole system rigid and liable to leak.

Having thus described myinvention,Iclaim as new and desire to secure by Letters Patent- The combination, substantially as before set forth, ofa pipe-length having a flattened portion, (one or more,) which is provided with a tapped hole and a nozzle or cook, the stem of which is screwed into said tapped hole.

FREDERICK GRINN ELL.

Witnesses:

H. J. MILLER, J. A. MILLER, Jr. 

